Search Results - "Perez, Lazaro J."
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1
Evaluation of particle tracking codes for dispersing particles in porous media
Published in Scientific reports (15-10-2024)“…Particle tracking (PT) is a popular technique in microscopy, microfluidics and colloidal transport studies, where image analysis is used to reconstruct…”
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2
Functions of bounded variation, the derivative of the one dimensional maximal function, and applications to inequalities
Published in Transactions of the American Mathematical Society (01-05-2007)“…We prove that if f:I\subset \mathbb{R}\to \mathbb{R} is of bounded variation, then the uncentered maximal function Mf is absolutely continuous, and its…”
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3
Upscaling of Mixing‐Limited Bimolecular Chemical Reactions in Poiseuille Flow
Published in Water resources research (01-01-2019)“…We consider the fast irreversible bimolecular chemical reaction A+B→C in the Poiseuille flow through a channel, in which A displaces B. This system allows to…”
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4
Contributions of biofilm-induced flow heterogeneities to solute retention and anomalous transport features in porous media
Published in Water research (Oxford) (01-02-2022)“…•We integrate experimental biofilm images of Paenibacillus 300A strain with mathematical modeling.•Bioflm is represented as a synthetic porous structure with…”
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5
Reactive Random Walk Particle Tracking and Its Equivalence With the Advection‐Diffusion‐Reaction Equation
Published in Water resources research (01-01-2019)“…We present a reactive random walk particle‐tracking approach to describe bimolecular chemical reactions and show its equivalence with the…”
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6
Effective dispersion coefficients for the upscaling of pore-scale mixing and reaction
Published in Advances in water resources (01-12-2020)“…•Definition and quantification of effective dispersion for pore-scale mixing.•Dispersive lamella approach based on effective dispersion upscales and predicts…”
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7
Behavior of weak type bounds for high dimensional maximal operators defined by certain radial measures
Published in Positivity : an international journal devoted to the theory and applications of positivity in analysis (01-06-2011)“…As shown in Aldaz (Bull. Lond. Math. Soc. 39:203–208, 2007), the lowest constants appearing in the weak type (1, 1) inequalities satisfied by the centered…”
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Boundedness and unboundedness results for some maximal operators on functions of bounded variation
Published in Journal of mathematical analysis and applications (2008)“…We characterize the space BV ( I ) of functions of bounded variation on an arbitrary interval I ⊂ R , in terms of a uniform boundedness condition satisfied by…”
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9
Assessment and Prediction of Pore‐Scale Reactive Mixing From Experimental Conservative Transport Data
Published in Water resources research (01-06-2020)“…We investigate the impact of pore‐scale heterogeneity on reactive mixing using experimental data from inert fluid‐fluid displacement in a quasi 2‐D porous…”
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10
Upscaling Mixing-Controlled Reactions in Unsaturated Porous Media
Published in Transport in porous media (01-01-2023)“…We study mixing-controlled chemical reactions in unsaturated porous media from a pore-scale perspective. The spatial heterogeneity induced by the presence of…”
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11
On Gagliardo–Nirenberg Type Inequalities
Published in The Journal of fourier analysis and applications (01-06-2014)“…We present a Gagliardo–Nirenberg inequality which bounds Lorentz norms of a function by Sobolev norms and homogeneous Besov quasinorms with negative…”
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12
Impact of confined geometries on hopping and trapping of motile bacteria in porous media
Published in Physical review. E (01-01-2021)“…We use a random walk particle-tracking (RWPT) approach to elucidate the impact of porous media confinement and cell-cell interactions on bacterial transport…”
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13
Effectiveness assessment of otosclerosis surgery
Published in Acta oto-laryngologica (2005)“…Conclusions.The epidemiological characteristics of otosclerosis and its treatment in Andalusia resemble those of other populations with similar socioeconomic…”
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14
Optimal Bounds on the Modulus of Continuity of the Uncentered Hardy–Littlewood Maximal Function
Published in The Journal of geometric analysis (2012)“…We obtain sharp bounds for the modulus of continuity of the uncentered maximal function in terms of the modulus of continuity of the given function, via…”
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15
A note on extreme cases of Sobolev embeddings
Published in Journal of mathematical analysis and applications (15-08-2006)“…We study the spaces of functions on R n for which the generalized partial derivatives D k r k f exist and belong to different Lorentz spaces L p k , s k . For…”
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16
Contributions of biofilm-induced flow heterogeneities to solute retention and anomalous transport features in porous media
Published in Water research (Oxford) (25-11-2021)“…We report that microbial biofilms are ubiquitous within porous media and the dynamics of their growth influence surface and subsurface flow patterns which…”
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17
Solute transport prediction in heterogeneous porous media using random walks and machine learning
Published in GEM international journal on geomathematics (01-12-2023)“…Solute transport processes in heterogeneous porous media have been traditionally studied through the parameterization of macroscale properties using upscaling…”
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18
Inequalities for Partial Moduli of Continuity and Partial Derivatives
Published in Constructive approximation (01-08-2011)“…We obtain pointwise and integral type estimates of higher-order partial moduli of continuity in C via partial derivatives. Also, a Gagliardo–Nirenberg type…”
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19
Effective removal of arsenic from contaminated groundwater using an iron-based metal-organic framework
Published in Environmental technology & innovation (01-11-2023)“…This study investigates the potential of an iron-based metal–organic framework (MOF) material, Fe-benzene-1,3,5-tricarboxylate (Fe-BTC), for arsenic removal…”
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20
Weak-Type Lower Bounds for High-Dimensional Hardy–Littlewood Maximal Operators on Certain Measures via Averaging Operators
Published in Mediterranean journal of mathematics (01-10-2022)“…Consider R d with the euclidean distance, and let 0 < α < 1 . We study the behavior of the averaging operators given by the radial density d μ ( x ) = | x | -…”
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